Mahanagar Telephone Nigam [MTNL] — Line dead from last 2 months

Address:

745, jwala nagar shahdara

My no is 22301019. I have made many complaints online as well as to the roaming around lineman. But the lineman gives a dead smile to this like their line and the online complaints are closed without even checking it once whether its working or not. No action has been taken from 2 months but yes they send the bill as such there is no problem in the line.